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Cunningham D.,Eastern Connecticut State University | Zhang J.,Chinese Academy of Geological Sciences | Li Y.,National Earthquake Response Support Service
Tectonophysics | Year: 2016

For many tectonicists, the structural development of the northern Tibetan Plateau stops at the Altyn Tagh Fault (ATF). This study challenges that assumption. Structural field observations and remote sensing analysis indicate that the Sanweishan and Nanjieshan basement cored ridges of the Archean Dunhuang Block, which interrupt the north Tibetan foreland directly north of the ATF, are bound and cut by an array of strike-slip, thrust and oblique-slip faults that have been active in the Quaternary and remain potentially active. The Sanweishan is a SE-tilted block that is bound on its NW margin by a steep south-dipping thrust fault that has also accommodated sinistral strike-slip displacements. The Nanjieshan consists of parallel, but offset basement ridges that record NNW and SSE thrust displacements and sinistral strike-slip. Regional folds characterize the extreme eastern Nanjieshan and appear to have formed above blind thrust faults which break the surface further west. Previously published magnetotelluric data suggest that the major faults of the Sanweishan and Nanjieshan ultimately root to the south within conductive zones that are inferred to merge into the ATF. Therefore, although the southern margin of the Dunhuang Block focuses significant deformation along the ATF, the adjacent cratonic basement to the north is also affected. Collectively, the ATF and structurally linked Sanweishan and Nanjieshan fault array represent a regional asymmetric half-flower structure that is dominated by non-strain partitioned sinistral transpression. The NW-trending Dengdengshan thrust fault system near Yumen City appears to define the northeastern limit of the Sanweishan-Nanjieshan block, which may be regionally viewed as the most northern, but early-stage expression of Tibetan Plateau growth into a slowly deforming, mechanically stiff Archean craton. © 2016

Liu K.,China Earthquake Administration | Qu G.,National Earthquake Response Support Service | Chen J.,China University of Geosciences | Wang W.,China Earthquake Administration | Ning B.,National Earthquake Response Support Service
Acta Geologica Sinica | Year: 2013

The Tangshan area lies in the North China plain where an Ms 7.8 earthquake occurred in 1976, which is associated with a hidden active fault. To reveal the recurrence characteristics of major quakes in this area over a relatively long time, we have conducted a comprehensive study using geological investigations, shallow seismic exploration, boreholes, trench observations and geological dating. Five paleoearthquakes were recognized in a 6.4m-deep trench west to the Tangshan Asylum. Among them, the former three events occurred between 56.78 ± 4.83ka and 89.39 ± 7.60 ka, and the fourth event occurred around 6.9 ka, respectively, and then followed by the fifth in 1976. Seven boreholes were deployed crossing the ground fissure formed by the 1976 Tangshan earthquake at the site of No. 10 Middle School, where we have identified 25 liquefaction events in the boreholes TZC6-5 and 6-7. By the comprehensive analysis ofthe trench, the liquefaction events from the boreholes and the depth-time curves of drill cores, we suggest a new recurrence model of major quakes in this area. It is not a constant recurring cycle since 210 ka, instead consisting of six alternating seismically quiet and active stages. Of them, stage I (>177 ka) was a quiescent period in seismicity, stage II (from 143 ka to 177 ka) was an active one, stage III (from 102 ka to 143 ka) was quiescent again, stage IV (from 56 ka to 102 ka) had many quakes, stage V (from 6.9 ka to 56 ka) became quiet, and stage VI (from 6.9 ka to now) was the beginning of a new seismically active period.

Lanying Z.,China University of Geosciences | Jianping W.,National Earthquake Response Support Service
ARPN Journal of Engineering and Applied Sciences | Year: 2015

The linear model for the routine maintenance evaluation of earthquake rescue equipments is presented. Based on the maintenance data of CISAR rescue equipments in the past five years, the routine maintenance costs is analyzed and the linear model is set up through divide the costs to four parts and their separate statistics. There are both simple linear model and weighted linear model and also the compare of deviation for the two models is there. © 2006-2015 Asian Research Publishing Network (ARPN).

Zhou B.-J.,China University of Geosciences | Jia Q.-L.,National Earthquake Response Support Service
Journal of Natural Disasters | Year: 2011

Earthquake is a devastating sudden onset of natural disasters. After destructive earthquakes occurrence, all levels of government and the department must quickly respond to such emergencies. Emergency drills training can improve personnel emergency management and scientific decision - making ability. This paper makes use of virtual reality simulation technology to build earthquake disaster management simulator. High - fidelity simulation of the earthquake disaster situation based on vertual earthquake emergency drilling platform enhances field feeling of trainer, improves rapid response ability of earthquake emergency management personnel.

Yang N.,Dalian University of Technology | Wang Z.,Dalian University of Technology | Wang Z.,CAS Shenyang Institute of Automation | Hu W.,National Earthquake Response Support Service
IEEE International Conference on Control and Automation, ICCA | Year: 2016

Human-human interactions are widely existed in many fields. In this paper we describe how to analyze and assess the interactional synchrony between two humans by using body sensor networks (BSNs). Utilizing acceleration data collected from inertial sensors, the synchrony between two people's movements both from time domain and frequency domain is conducted to get a better understanding of the coordination during two people's interaction. An experiment of two people walking side-by-side was performed and the experimental results demonstrate the effectiveness of our proposed method. © 2016 IEEE.

Jiang M.,Dalian University of Technology | Shang H.,National Earthquake Response Support Service | Wang Z.,Dalian University of Technology | Wang Z.,CAS Shenyang Institute of Automation | And 2 more authors.
Physiological Measurement | Year: 2011

Human activity recognition (HAR) by using wearable accelerometers has gained significant interest in recent years in a range of healthcare areas, including inferring metabolic energy expenditure, predicting falls, measuring gait parameters and monitoring daily activities. The implementation of HAR relies heavily on the correctness of sensor fixation. The installation errors of wearable accelerometers may dramatically decrease the accuracy of HAR. In this paper, a method is proposed to improve the robustness of HAR to the installation errors of accelerometers. The method first calculates a transformation matrix by using Gram-Schmidt orthonormalization in order to eliminate the sensor's orientation error and then employs a low-pass filter with a cut-off frequency of 10 Hz to eliminate the main effect of the sensor's misplacement. The experimental results showed that the proposed method obtained a satisfactory performance for HAR. The average accuracy rate from ten subjects was 95.1% when there were no installation errors, and was 91.9% when installation errors were involved in wearable accelerometers. © 2011 Institute of Physics and Engineering in Medicine.

Zhao J.,Beijing University of Technology | Li L.,Beijing University of Technology | Shang H.,National Earthquake Response Support Service | Hu W.,National Earthquake Response Support Service
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2014

In evaluation of robotic kinematic dexterity performance, there are many different indexes to express robotic kinematic dexterity, and those different indexes tend to have different degree of correlations among them. Some correlations are very remarkable, so the provided information may be overlapped. New indexes are created by using the principal component analysis. These new indexes which are related to each other can reflect robotic kinematic dexterity comprehensively. Comprehensive evaluation of kinematic dexterity of the planar 2R and three different configurations spatial 3R manipulators are described with the different dimensions and same configuration, by using principal component analysis which is characterized by lowering dimension gradually and dealing comprehensively, and correlations between the various kinematic dexterity indexes are also presented. The results show that the five kinematic dexterity indexes of the planar 2R and PUMA spatial 3R manipulator are positively correlated and have the same change pattern. A comprehensive dexterity performance index can represent the five indexes information. For the five kinematic dexterity indexes of other two spatial 3R manipulators, some indexes are positively correlated and some indexes are negatively correlated. A variable can be used for representing the information of manipulators isotropic indexes; a variable can be used for representing the indexes information of the motion ability of manipulators. © 2014 Journal of Mechanical Engineering.

Jia Q.,National Earthquake Response Support Service | Zhou B.,National Earthquake Response Support Service
Jisuanji Yanjiu yu Fazhan/Computer Research and Development | Year: 2010

Earthquake is a huge devastating and paroxysmal natural disaster. Emergency leaders have to do several jobs during the response to earthquake. In order to do the right job they must be trained. Training can be done by using several techniques and methods. One of the methods is virtual training. Doing training with virtual training simulation give the opportunity to train leaders without numbers of persons that are normally needed for training. Virtual emergency rescue training simulation is one of virtual simulation research areas. The realistic extent of earthquake virtual scene is to determine the effect of virtual simulation training. The purpose of this paper is to build virtual disaster scenario. Because the earthquake disaster is very complicated, it's not possible to simulate every aspect of earthquake disaster scenario in detail. In this paper, by studying the formation of building collapse and the collapse of buildings in the distribution of space, sub-model way to build the scene, secondary disaster simulation methods, scenes integration approach, the authors discuss how to build a relatively realistic virtual earthquake disaster scenario. The research of this paper has laid a foundation for the research and development of virtual simulation training systems, and provided a theoretical basis for the visual simulation modules.

Li Y.,National Earthquake Response Support Service
ICACTE 2010 - 2010 3rd International Conference on Advanced Computer Theory and Engineering, Proceedings | Year: 2010

This paper first introduced the development of a urban earthquake disaster management information system (UEDMIS), including the system framework, earthquake and infrastructure related database, disaster estimation and decision optimization models, functions of the software and sample interface of the software. Other than the earthquake disaster information management, the UEDMIS also can be used for emergency response for earthquake and other similar disaster incidents. How can the UEDMIS be used for incidents response? This paper gives some advices and envisages secondly. © 2010 IEEE.

Li Y.,National Earthquake Response Support Service
Acta Seismologica Sinica | Year: 2011

With the development of high-resolution satellite technology, lots of remote sensing data were applied to disaster assessment and relief. Based on the study on prioritizing search and rescue target using remote sensing image recognition, this paper described a way of how to select collapsed buildings from an earthquake affected area for search and rescue based on high-resolution remote sensing data analysis, including the rules and analysis flow. An example was given with the data acquried during the 2008 Wenchuan earthquake to discuss the analysis models detailedly.

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